Cottage Grove, WI Pollen Calendar

Today in Cottage Grove

Monday, July 27, 2026

The Cottage Grove Pollen Calendar, Month by Month

Each month is rated from Low to Very High, with the allergen that usually drives it. The current month is outlined.

What's Active in July

These allergens are usually in the air around Cottage Grove this month:

Typical peak timing this month: early July to late July.

The Worst and Best Months in Cottage Grove

Cottage Grove's pollen usually peaks in September, driven by Ragweed. If your allergies flare on the same weeks every year, that is usually why. The calmest month is typically January.

Wisconsin has a spring tree season, grass in early summer, and a heavy ragweed season in the fall.

A pollen calendar shows the usual pattern, but weather shifts it. A warm winter pulls tree season earlier, and a late frost stretches ragweed into November. Start any allergy medication a week or two before your worst month, and check the daily count to catch the spikes. If symptoms hit hard every season, an allergist in Wisconsin can help with testing and longer-term options like allergy shots.

Keep Track of Pollen in Cottage Grove

The calendar tells you what to expect. Your daily report tells you what's actually happening:

• Cottage Grove pollen count today — live tree, grass, and weed levels with a 5-day forecast.
• Cottage Grove air quality — today's AQI and the pollutants behind it.
• Wisconsin pollen season — the statewide calendar and other cities.
• Today's worst pollen cities — see where Cottage Grove ranks right now.

Get Cottage Grove pollen alerts

We send a free email whenever pollen is High or Very High in Cottage Grove. No spam, no daily emails when pollen is low. Just a heads-up on the days that matter.